How to reproduce:
1. Create new project
2. Open a color picker (e.g. Window → Rendering → Lighting → Environment → Realtime Shadow Color)
3. Create a new color library in Project (Swatches → Three Dots → Create New Library)
4. Select the created color library (Project\Editor)
5. Observe the Inspector

Expected result: No warning appears on a new Color Library
Actual result: “The main object name " should match the asset filename" warning is shown in the Inspector

Reproducible with: 2023.1.0a1, 6000.0.62f1, 6000.2.13f1, 6000.3.0f1, 6000.4.0a5, 6000.5.0a1

Reproducible on: Windows 11 Pro (24H2)
Not reproducible on: No other environments tested